Pyridine → N-{2,4-difluoro-3-[5-(2-methyl-pyrimidin-5-yl)-1H-pyrrolo[2,3-b]pyridine-3-carbonyl]-phenyl}-2-fluoro-benzenesulfonamide

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To (3-amino-2,6-difluoro-phenyl)-[5-(2-methyl-pyrimidin-5-yl)-1H-pyrrolo[2,3-b]pyridin-3-yl]-methanone (50, 0.220 g, 0.602 mmol) in 4.01 mL of tetrahydrofuran, 2-fluoro-benzenesulfonyl chloride (20, 0.352 g, 1.807 mmol) and pyridine (0.146 mL, 1.807 mmol) are added and the reaction is heated at 60° C. overnight. The reaction is partitioned between brine/water and ethyl acetate/tetrahydrofuran. The organic layer is separated and the solvent is removed under vacuum. The resulting residue is purified by silica gel column chromatography eluting with 0-10% methanol in dichloromethane, then triturated with ethyl acetate/heptane to provide the desired compound as a light tan solid (P-1520, 0.130 g, 0.248 mmol, 41.2% yield).

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